Breeding for Egg Colors

Sorry if this is the wrong section, but it seems like the best place to put it.

Anyway, let's say you have an Americuana roo, a Welsummer roo, and Wyandotte, RIR, NHR, and Barred Plymouth Rock hens. You want a hen that lays blue eggs. (FYI , ICYDK, Americuanas lay blue eggs, Welsummers lay dark brown eggs and the other breeds lay brown eggs.)

Now, BYC, use your amazing knowledge of chicken genetics to figure out this puzzle!

(I'm not planning on breeding. This is completely theoretical.)